ThefilmtakesplaceinToulouseandtellsthestoryofJean,a55year-oldpolicemanwhodiscovershisson,Maxime,andhisson’sboyfriendhangedinahotelroom.TheautopsyshowsthathediedfromanoverdoseofGHB,justsevenminutesafterhisboyfriend.DuringaneveningorganizedbyMaxime’sfriends,JeandiscoverstheclubBISOU,wherehissonusedtogo.There,hemeetsFabien.Tryingtoknowmoreaboutwhathappened,JeangoestotheclubseveraltimesoverandisquicklywelcomedbytheBisouers.Fabienbecomesattachedtohim,andJeanstartsmixinghismourningwiththedesiretodiscoverhisson’sworld.
